US821507A - Valve. - Google Patents

Description

No. 821,507. PATENTED MAY 22, 1906. W. H. KLINE.

VALVE.

APPLICATION FILED JULY 13, 1904.

3 SHEETS-SHEET 1.-

PATENTED MAY 22, 1906.

. H. KLINE.

VALVE.

APPLICATION FILED JULY 13. 1904.

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No. 821,507. 'PATENTED MAY 22, 1906.

W. H. KLINE.

VALVE. APPLICATION FILED JULY 13. 1904.

Parana orrron WILLIAM H. KLINE', O F DUNBAR; PENNSYLVANIA.

VALVE;

Specification of Letters Patent.

Patented May 22; 1906.

Application filed July 13, 1904. Serial No. 216,410.

enable others skilled in the art to which it ap pertains to make and use the same, reference being had to the accompanying drawings,

and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to valves, and especially to that class of valves adapted for controlling the flow of a fluid under pressure, wherein the valve is itself controlled by fluidpressure.

The object of my invention is to provide a valve especially for use in connection with blowing-engines or air-compressors using the well-known form of gridiron port-closures to control the flow of compressed fluid from the compressor to a storage-tank wherein the gridiron port-closure is operated by a cylinder and piston. My improved valve is de signed to control the flow of a compressed fluid from the compressor to the valve-actuating cylinder and piston, so that the portclosure will be opened to admit the flow of fluid from the compressor to the tank only when the tension of the fluid in the compressor becomes equal to or greater than the tension of the stored fluid in the tank.

It is well known that in the ordinary compressor the port-closure is operated either mechanically and positively through the medium of an eccentric or is opened by the tension of the compressed fluid in the compressor and closed positively through the medium of the eccentric. It is also well known that in compressors where the port-closure is opened by the action of the compressed fluid the port-closure piston is operated as soon as the tension of the fluid becomes sufficient to pass the usual check-valve located in the pipe which conducts the fluid from the compressor to the port-closure cylinder. In compressors supplied with such fluid-pressure-operated port-closure it is well known that the portclosure is opened before the pressure becomes as great as the pressure in the storagetank. It is desirable that the port-closure remain closed until the tension of the fluid in the compressor equals the tension of the fluid in the tank, so that the admitted fluid shall tion, size,

be of a tension similar to that already stored. My improved valve is held in a closed state by the tension of the fluid in the tank until the fluid-pressure in the compressor becomes equal thereto, when it is automatically opened to permit the introduction of fluid to the port-closure cylinder and against the piston operating the port-closure.

With these and other objects in view the present invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that changes in the form, proporand minor details may be made within the scope of the claims without de parting from the spirit or sacrificing any of the advantages of the invention.

In the drawings, Figure 1 is an end elevation of a fluid-pump, showing the cylinders containing pistons for operating the portclosures mounted within the pump body and my improved valve mounted thereon to control the flow of fluid from the pump to the cylinder. Fig. 2 is a side elevation, partly in section, showing a compressor-engine with the gridiron port-closure for controlling the flow of fluid from the pump to a storage-tank and the manner of mounting and operating my improved valve. Fig. 8 is a detail plan view; Fig. 4, a detail section view; Fig. 5, a detail side elevation of my improved valve, together with a vertical section of the portclosure-operating cylinder and piston. Fig. 6 is a detail side elevation showing the connection with the throttle-valve of the compressor-engine and the means for holding my improved. valve closed when the throttlevalve of the engine is closed.

Like characters of reference designate corresponding parts throughout the various views.

My improved valve is designed for use in connection with the ordinary compressorengine 1, provided with a pump 2, within which a piston 3 is mounted to reciprocate. A tank 4 is provided in which is stored the compressed fluid supplied thereto from the pump 2 through pipes 5. Within the pump are located the usual gridiron port-closures 6, mounted to reciprocate upon and in connection with the gridiron ports 7. The portclosures 6 are operated by istons reciprocating within cylinders 8. F uid under tension is ordinarily supplied from the pump to the cylinder for opening the port-closures 6, which are closed positively through the medium of the lever 9, connecting-rod 10, and eccentric 11. A pipe 12, connecting with the pump, conducts the compressed fluid to the cylinder 8. Within this pipe 12 I locate my improved valve, consisting of a valvecasing 13, provided with a valve 15 is mounted within the valve-casing 13, adapted to freely reciprocate and to en gage the seat 14. Above valve 15 the casing is provided with a chamber 16 and a pipe 17, leading into such chamber. The pipe 17 is connected with a linepipe 18, connected with and adapted to conduct fluid from the storage-tank 4. Above the chamber 16 is rigidly secured to the casing an angular arm 19, upon which is pivotally mounted a lever 20. The lever 20 bears upon the upper end of a plunger 21, the lower end of which bears against the upper face of the reciprocating valve 15. My valves are preferably mounted in pairs, each adapted to admit compressed fluid to a cylinder located at opposite ends of the pump. The levers 20 are connected positively by a connecting-rod 22. A lever 23 is provided with a roller 24 upon one end thereof and pivoted to any convenient stationary object, as the arm 25. The roller is so disposed as to contact with and be operated by a disk 26, rigidly secured to and rotating with the throttle-valve-operating hand-wheel 27. The end of the lever 23 opposite the roller 24 is connected with the arm 20, so that the closing of the throttle-valve will close and hold the valve 15 in such closed position. -A by-pass 28 is provided for the passage of the fluid around the valve and is provided with an ordinary check-valve 29, located therein.

The operation of my improved valve is as follows: The pipe 12 pierces the wall of the pump and leads to the cylinder 8. The pipe 18 leads from the storage-tank 4 and into the chamber 16 above the reciprocating valve 15.

g The upper face of the reclprocating valve 15 is thereby subjected to a pressure from the compressed fluid in the tank 4 and held there by normally seated. With a reciprocating movement of the piston 3 of the pump the fluid thereby becomes compressed, and the pressure acts against the lower face of the valve 15. When the tension of the compressed fluid in the pump becomes greater than the tension of the compressed fluid in the tank, the pressure upon the under side of the valve 15 unseats such valve, permitting the passage of the compressed fluid through the pipe 1 2 into the cylinder 8. The compressed fluid in the cylinder 8 exerts pressure upon the piston therein to slidably unseat gridiron port-closure 6 to permit the passage of the compressed fluid through the port from the pump into pipe 5 and the tank 4. It will therefore be seen that no fluid is advalve-seat 14. A

the reciprocating mitted to the pipe 5 and tank 4 of a less tension than the fluid already contained in the tank. Upon the completion of the stroke of the piston 3 the port-closure 6 is positively closed through the medium of the eccentric 11, rod 10, and lever 9 in the usual manner. With the return of the piston within cylinder 8 to the position to close the port-closure 6 the compressed fluid used to operate such piston is usually permitted to escape. In my improved valve the mechanical and positive return of the port-closure 6 to seat forces the fluid within such cylinder through the by-pass 28 and check-valve 29.

While I have shown and described my valve in connection with a blowing-engine. or compressor, for which use it is primarily intended, it is evident that it could as well be used for any other purpose where it is desired to control the flow of a fluid and maintain such flow at a tension equal to the tension of a fluid from a diflerent source. It is also obvious that minor changes in theform and construction of the valve may be made by one skilled in the art without departing from the spirit of my invention.

Having thus described my invention, what I claim as novel, and desire to secure by Letters Patent, is.

-1. In a device of the character described, a storage-reservoir, a fluid-compressor provided with a port to admit fluid under pressure from the compressor to the reservoir, a portclosure adapted to control the flow of the fluid through the port and from the compressor to the reservoir, a piston adapted to operate said port-closure, a cylinder in which said piston is mounted to reciprocate, a pipe disposed to admit a fluid under pressure from w the compressor to the cylinder to operate the piston, a valve located in said pipe and means for admitting a fluid from the reservoir to hold the said valve normally closed, the parts being so disposed that when the tension of the fluid in the compressor exceeds the tension of the fluid in the reservoir, the valve is opened to admit fluid to the cylinder.

2. In a device of the character described, the combination of a reservoir for the storage of compressed fluid, a fluid-compressor provided with a port to admit 'the compressed fluid from the compressor to the reservoir, a port closure, a cylinder, .a piston within said cylinder connected with and adapted to operate said port-closure, a pipe to conduct a compressed fluid from the compressor to the cylinder, a reciprocating valve disposed in said pipe and a pipe connected with the reservoir and adapted to admit fluid under reservoir-pressure to the upper side of the reciprocating valve to hold said valve normally seated until the fluid in the compressor assumes a greater tension than the fluid in the reservoir.

3. A device of the character described,

comprising in combination a reservoir for the storage of compressed fluid, a fluidcompressor provided with a port-closure adapted to control the flow of said compressed fluid from the compressor to the reservoir, a cylinder, a piston mounted Within said cylinder and secured to and adapted to operate said portclosure, a pipe to conduct the compressed fluid from the compressor to the cylinder, a reciprocating valve disposed in said pipe, a pipe connected with the reservoir and adapted to admit fluid under reservoir-pressure to the upper side of the reciprocating valve to hold said valve normally seated until the fluid in the compressor assumes a greater tension than the fluid in the reservoir and a by-pass provided with a check-Valve adapted to permit the return-passage of the compressed fluid from the cylinder around the valve. 1

4:. A device of the character described, comprising in combination, a reservoir for the storage of compressed fluid, a fluid-compressor provided with a port to permit the flow of fluid from the compressor to the reservoir, a port-closure adapted to control the flow of compressed fluid through the port, a cylinder, a piston mounted within said cylinder and connected with and adapted to operate the port-closure, a pipe to conduct compressed fluid from the compressor to the cylinder, a reciprocating valve disposed in said pipe, a pipe connected with the reservoir and arranged to admit fluid under reservoir-pressure to the upper side of the reciproeating valve to hold said valve normally seated until the fluid in the compressor assumes a greater tension than the fluid in the reservoir, means connected with the pump starting mechanism whereby the stopping of the compressor holds the reciprocating valve seated and means to permit the return-flow of the fluid from the cylinder around the valve.

5". A device of the character described, comprising in combination, a cylinder, a piston within the cylinder, a storage-reservoir, a compressor provided with aport to permit the flow of a compressed fluid from the compressor to the reservoir, a portclosure connected to and operated by the piston, a pipe to conduct a fluid from the compressor to the cylinder to operate the piston and open the portclosure, a reciprocating valve disposed in said pipe, means for conducting a fluid under reservoir-pressure from the reservoir to hold the reciprocating valve normally closed, but adapted to be opened by the fluid in the pipe when the tension thereof becomes greater than the tension of the fluid in the reservoir, means for mechanically returning the piston and means to permit the fluid in the cylinder to flow back to the compressor and around the reciprocating valve upon the return. of the piston.

In testimony whereof I aflix my signature in presence of two witnesses.

WILLIAM H. KLINE. Witnesses:

JOHN KURTZ, MICHAEL J. FITZGERALD.

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